High speed wire drawing machine



June 16, 1936. w. D. PIERSON ET AL 2,

HIGH SPEED WIRE DRAWING MACHINE Filed Feb. 3, 1934 2 Sheets-Sheet 1 INVE ToRs WflhamD. arson. George WJackmam wa I ATTRNE June 16, 1936.

W. D. PIERSON ET AL HIGH SPEED WIRE DRAWING MACHINE Filed Feb. 3, 1934 2 Sheets-Sheet 2 an 7/? m... H N a R mw m Ilka Gemge mm W i 2 w WWW" vb.

I I I J -N.

Par ntal time 3, its

Farrel Foundry & Mac

bury, Conn, a corporation of Connecticut Application Feb 19 a s s.

This invention relates to continuous wiredrawing machines, and more particularly to a high speed multiple-die wiredrawing machine of the cabinet? type, in which the wire may be strungup with a minimum loss of time.

One object of this invention is to provide a wiredrawing. machine of the above nature in which the wiredrawing is accomplished by a plurality of pairs of stepped cones located at'diiferent levels; the cones of one pair being ofiset forwardly from the cones of the next higher pair.

A further object is to provide a wiredrawing machine of the above nature in which thelside walls of the inclosing cabinet are provided with slots, thus permitting the dies to be strung upon the Wire at spaced intervals before inserting the wire in the wiredrawing machine.

A further object is to provide a machine of the above nature which will be relatively simple in construction, inexpensive to manufacture, easy to install and manipulate, economical of power and floor space, and very efficient and durable in use.

With these and other objects in view there have'been illustrated on the accompanyin drawings two forms in which the invention may be conveniently embodied in practice.

In the drawings:

Fig. 1 represents a perspective view of thedrawing machine with the roll-top dobr of the cabinet in open position.

Fig. 2- is a fragmentary left end view of the machine showing the slotted walls of the cabinet and the lubricant drain troughs.

Fig. 3 is a fragmentary interior view of the lefthand wall of the cabinet showing the location of the multiple die holder box and the wall slot.

Fig. 4 is a horizontal sectional view of the same,

taken along the line 'Q-d of Fig. 3.

40 Fig. 5 is an enlarged fragmentary view, similar to Fig. .3, showing a device for holding dies within their respective pockets.

Fig. 6 is a plan view of one of the multiple die boxes anddie holders.

Fig. 7 is a fragmentary inside View of the right wall cf-the cabinet, showing the location of the wall slot and splash guard.

Fig. 8 is a fragmentary transverse sectional view of the same taken along the line le-lt of Fig.7.

In the we of the conventional type oi cabinet wired'rawing machines, in the past, considerable time has been consumed, and dificulty has been experienced in the setting up oi the m1.-

e and i No. 709,645

stringing the wire preparatory to the drawing operation.

By means of the present invention, the above and other disadvantages have been avoided by the provision of a machine enabling the wire upon which the dies have been strung to be slipped laterally through a slot in the wall of the cabinet,

thus facilitating the setting up operation and reducing the stoppage time.

In stringing the dies for the present type of continuous wiredrawing machine, the proper number of dies desired are first strung along the wire to be reduced either by hand, or in the case of large wire, by means of a pull-away bench, or the like, not shown, the largest dies of course being drawn first and the smaller dies later. The

spacing of the dies on the wire should be approxi- -mately the intervals required for winding the wire around the drawing capstans with sufilcient extra lengths so that the succeeding dies will come into their proper positions in the die holders. The intervals between the several dies may be readily judged with satisfactory accuracy by skillful operator.

Wiredrawing mechanism Referring now to the drawings in which like reference numerals denote corresponding parts throughout the several views, the numeral it indicates the supporting f r 1: 'vof the machine which supports a icabinet for housing the wiredralwing mech. The cabinet it comprises a basin-like base 82, a rear stepped w l3, and right and left side walls it and it respectively.

The top of the cabinet ii is closed by means of a thin curved hood member it, within which is journaled a roll-topdoor ll having slidable engagement in suitable opposed grooves it provided adjacent the front slightly inclined edges as and 2b of the side walls M and it. The door ii is adapted to be drawn downwardly by a suitable handle 2% for completely se the front of thecompartment ll.

Located within the cabinet M are two ps of stepped cones, 2i and 22, 23 and 2d, the upper cones 2i and 22 being located above and ofiset rearwardly from the lower cones 23 and 2d. The upper cones are suitably joaled in the upper step of the rear wall it while the lower cones 2t! and 2d are m1! journaled in the front or lower step of said rear wall it Each cone consists ofa plurality oi capstans Etc and the (see Fig. 2), five in this instance, of successively in creasing diameters, the size of said cape H... dencn n the cunt oi radon in the diameter of the wire produced by a series of drawing dies (not shown). The dies are mounted in staggered relationship in suitable pockets provided in a pair of die holders 25 and 26 located between the upper cones 2| and 22 and the lower cones 23 and 24 respectively, as shown in Fig. 1.

The die holders 25 and 26 are slidably mounted upon a pair of horizontal brackets 21 and 28 attached to the stepped portions of the rear wall l3, and said die holders are adapted to be reciprocated by means, not shown, located behind the rear wall l3.

As best shown in Fig. 2, the position of the upper pair of cones 2| and 22 with respect to the lower cones 23 and 24 is such that the largest or front capstans 2|a of the upper cones 2| and 22 are in direct vertical alignment with the smallest or rearmost capstans 23a of the lower cones 23 and 24. This construction permits the wire to pass directly from the front or largest capstan of the right-hand cone 22 of the upper tier, to rear and smallest capstan of the lower left-hand cone 23 of the lower tier, without the need of any intermediate idlers or guide rolls.

In order to cause a copious supply of lubricant to be sprayed upon the dies and wire while the machine is in operation, a plurality of horizontal perforated short spray pipes 29 are supported within the cabinet as shown in Fig. 1, the lubricant being supplied to said pipes 29 by a feed pipe 29a.

Initial selective die boxes A pair of initial die boxes 30 and 3|, each having a plurality of die sockets 32 are attached to the inside of the left wall i5 of the cabinet Ii, said boxes being preferably inclined so that when the initial die 33 is positioned in its holding socket 32, it will lie in horizontal alinement with the proper capstan of the adjacent cone 2| or 23 upon which it is to be wound.

The die boxes 30 and 3| are identical in construction and for the sake of simplifying the description, only the upper box 30 will herein be described.

As clearly shown in Figs. 3 to 6 inclusive, the die sockets 32 of the die box 38 are arranged in stepped relation. The opposed side walls of said sockets 32 are provided with a series of alined vertical slots 34 in their upper edges to permit the wire indicated by the letter 1: to pass through the dies located in said sockets.

The initial die 33 is supplied with constant lubrication by means of a flexible hose 35 (see Fig. 1) having suitableconnection with the feed pipe 29a, the free end of said hose 35 being permitted to empty into the particular socket 32 in which the initial die 33 may be located. A similar flexible hose 36 may be provided for the lower die box 3|. The bottom of each die socket 32 is provided with a drainage hole 31.

In order to provide a simple means for preventing the dies from flying out of the die sockets, without the use of wedges, covers, etc., provision is made of a plurality of spring pressed hooks 38, pivotally mounted on the outside of the wall of each socket 32, each hook being preferably mounted on a screw stud 39 as a fulcrum located below and in vertical alinement with the associated vertical slot 34. The hooks 38 are adapted to be normally urged by compression springs 40 in a counter-clockwise direction. The coil springs 40 are adapted to seat upon lugs 4| projecting from the walls of the die box *30.

The hooks 38 are limited in their counterclockwise rotation by engaging the adjacent walls of the die socket or the projecting stop pin 42 as the case may be. The hooks 38 are adapted to be manually swung in a clockwise direction by means of upwardly projecting thumb lugs 43 formed integral with the heads thereof. This construction leaves the die 33 free to move within its respective diecup but the hook 38 loosely embraces the wire a: being drawn outside the die box, the wire in cooperation with the hook 38 thus serving to effectively prevent the die from jumping or springing out of its socket..

If desired, the initial die holder may be disposed on the outside of the cabinet instead of on the inside, as for example, when grease is to be used for lubricating the first die instead of a liquid lubricant supplied through the spray pipes 29. 3

Stringing slots In order to facilitate the stringing operation, a pair of angular, forwardly opening slots 44 and 45 are formedin the left wall l5 of the cabinet, adjacent and in close proximity to the die boxes 30 and 3|. The slots 44 and 45 each have horizontal front sections 46 and downwardly inclined rear sections 460., which are enlarged to include the area of the vertical slots 34 in the die boxes 30 and 3|.

Provision is made of a pair of inclined drain gutters 41 and 41a located on the outside of the left wall l5 of the cabinet said gutters being adapted to catch any lubricant which may splash through the slots 44 and 45, after being thrown off the rotating cones by centrifugal force. From the gutters 41 and 41a the lubricant will flow back into the cabinet through suitable drain holes 41b (see Fig. 2 lower drain) in the wall |5 Initial guide roll In order to guide the wire a: horizontally into the machine through the side slots 44 and 45 from a coil of wire supported on a reel not shown, pr'ovision is made of a flanged guide roll 48 freely rotated upon a horizontal elongated shaft 49 supported on the outside of the cabinet wall l5 by means of bracket 50. The bracket 50 is detachably secured to one-of a pair of elongated attachment pads, 5| and 52, formed integral on the outside of the wall i5, each pad being provided with a series of spaced tapped holes 53 for selectively receiving a pair of cap screws 54 for anchoring the bracket 58 in any desired vertical position. The free end of the shaft 49 is formed with a flanged head 55 which provides a lateral stop for the guide roll 48. It will be apparent from this construction that by reason of the vertical adjustability of the bracket 50 on the cabinet wall l5, and the lateral adjustment of the guide roll 48 on the shaft 49, said guide roll 48 may be selectively moved into tangential alinement with the axis of the initial die 33 positioned in any one of the die sockets in thedie boxes 30 (or 3|).

Final drawing die After leaving the final cone 24 of the machine the wire is passed through an open slot 56 (see Fig. 7) formed in the front of the right-hand wall i4 of the machine and is delivered to a final drawing die 51 from which it is wound upon a finishing block 58.

The slot 56 has a rear depending portion 56a as by screws 5t upon the inside of the right wall M of the cabinet and serves to prevent the lubricant from splashing out through the slot 5t.

Casting mechanism.

During wire drawing, as the wire is processed through the several dies, the metal hardens and unless the final drawing die is positioned at the proper angle with respect to the finishing block 58, the coiled wire will spring out to a larger diameter than the block on which it is drawn and the coiled wire when lifted from the block will become tangled up and diflicult to handle. In order to overcome the above disadvantages the present invention contemplates the provision of a mechanism to accurately adjust the position The sliding bracket 908 is slidably mounted upon an angular supporting bracket lit which in turn is detachably secured as by cap screws lit -to a substantially heavy boss formed integral with the side wall It of the machine. In order to anchor the sliding bracket ltd in adjusted longitudinal position upon the bracket iii, the bracket i is provided with a pair of T-bolts located on opposite sides of the vertical boss ti and adapted to engage in a longitudinal T-slot formed in the bracket i3.

The object of adjusting the sliding bracket ltd and supported parts as a unit, is to set the final die 51 as close as possible to the take-up or finish ing block 5, it being understood that various sizes of take-up blocks may be interchangeably used on the same machine.

In order to permit the block W to be adjusted laterally so that the cylindrical surface of the block will be in tangential allnement with the wire as it is delivered from the final die bl, the block housing lid is slidably supported upon the supporting frame it of the machine, and is provided with a suitable screw mechanism 92% operated by means of an external crank handle 92 6 which may be manually operated to forwardly orrearwardly move the block housing M9 and surmounted block 58, 58a, to any desired location.

It will thus be seen that the final die of the wiredrawing machine is so mounted as to have uni- Operation In the operation of setting up the, wiredrawing machine before starting a new coil of wire through the machine, the wire will first be strung with the requisite number of dies spaced at the proper intervals. The coil of wire will then be placed over a reel or other holder not shown; located at the left of the cabinet, as viewed in Fig. l. In em all four of the cones til, 22, 23 and 2d are to be used, the part of the wire between the first drawing die and the coil will be slipped through the upper slot dd in the left-hand wall it) and passed over the guide roll 58. The first drawing die 88 will then be dropped into the lowermost socket 32 of the upper selective die box it. The operator will then pass the wire back and forth between the upper stepped cones 2i and 22, placing the dies in their proper positions .in the upper die holder 25. The wire is next diagonally directed 5 from the largest capstan of the upper cone 22 down to the smallest capstan of the lower cone 23, and the wire similarly will be passed-back and forth between the two lower cones it and 2d.

At the delivery end of the machine, the portion of the wire between the last two drawing dies will be slipped into the slot 56 in the right-hand wall it in readiness for setting the final die all in the casting" mechanism 5 i It is to be understood that the operator will leave an ample length of wire beyond the final die Ell to allow said wire to be wound about the drawing block 56 a sumcient number of times so as to prevent slipping when the block 58 is rotated. with the final die 51 thus properly set in the adaptor block 82, the clamping screw t1 may then be tightened against the die 511 so as to hold it tightly against the die cup wall 62d. I

The die 57 may then be adjusted at the proper angle and in the proper horizontal and vertical 25 position to give the wire the proper cast as it is delivered to the blocked, by manipulating the mechanism in the casting mechanism 88.

An important feature of the present invention lies in the fact that the drawn wire beyond the final die may be cut ofi from the remainder of the coil still in the machine in any desired length and removed from the block without disturbing the setting. oi the dies or casting mechanism in any way. The remaining wire may then be attached to the block and the drawing process continued as before.

While there have been disclosed in this smcification two forms in which the invention may be embodied, it is to be understood that these forms 40 are shown for the purpose of illustration only, andthat the invention is not to be limited to the specific disclosures but may be modified and embodied in various other forms without departing from its spirit. In short, the invention (35 includes all themodifications and embodiments ,coming within the scope of the following claims.

Having thus fully described the invention, what is claimed as new, and for which it is desired to secure Letters Patent, is:

1. In a wiredrawing machine, a cabinet comprising a rear wall, a side wire entrance wall, a side wire exit wall, a multi-socket selective stepped die box attached to said entrance wall, a pair of stepped wiredrawing cones journaled in said rear wall, a multiple die holder located between said cones, said entrance and exit walls having slots formed in the front edges thereof, whereby the wire to be drawn having a plurality of dies strimg thereupon may be passed into the cabinet from 50 the front thereof and the dies assembled therein, said entrance slot being inclined to conform to said stepped die box.

2. in a wiredrawing machine, a cabinet comprising a rear wall, a side wire entrance wall, a side wire exit wall, a multl-sccket selective angular die box attached to said entrance wall,

a pair of stepped wiredrawlng coneso icurnaled in said rear wall, a multiple die holder located between said .cones, said entrance and emt walls having slots formed in the front edges thereof, whereby the wire to ice-drawn having a plurality oi dies strung thereupon may be passed into the cabinet from the front thereof and the dies assembled therein, the slot in said entrance wall being angular to conform to said angular die box.

- 3-. In a wiredrawing machine, a cabinet having a top, bottom, rear and side walls, said rear wall having stepped sections, the lower section being offset forwardly of the upper section, two or more pairs of stepped cones journaled in each of said stepped sections respectively, a multiple die holder located between each pair of cones, a stationary die holder located on the left wall of said machine and being stepped to conform to said stepped cones, said left wall having an angular ed'geslot in alinement with said stationary die holder, wherebythe wire to be drawn having a plurality of spaced dies strung thereupon may be i passed into said cabinet from the front thereof and the dies assembled therein, and an inclined drain trough located on the outside of said entrance wall below the slot.

4. In a wiredrawing machine, a cabinet comprising a rear wall, a side wire entrance wall, a side wire exit wall, a multi-socket selective die box attached to said entrance wall, a pair of stepped wiredrawing cones journaled in said rear wall, 'a multiple die holder located between said cones, said entrance and exit walls having slots formed in the front edges thereof, whereby the wire to be drawn having a plurality of dies strung thereupon may be passed into the cabinet from the front thereof and the dies assembled therein, and a splash guard mounted on the inside of said exit wall above the slot to prevent lubricant from passing through said exit wall slot.

5. In a wiredrawing machine, a cabinet comprising a rear wall, a side wire entrance wall, a side wire exit wall, a multi-socket selective die box attached to said entrance wall, a pair of stepped wiredrawing cones journaled in said rear wall, a multiple die holder located between said cones, said entrance and exit walls having slots formed in the front edges thereof, whereby the wire to be drawn having a plurality of dies strung thereupon may be passed into the cabinet from the front thereof and the dies assembled therein, the slot in said exit wall having a depending rear section serving as a retainer for the wire until the slack has been taken up.

6. In a wiredrawing machine, a cabinet having a top, bottom, rear and side walls, said rear wall having two stepped sections, the lower section being offset forwardly of the upper section, two pairs of stepped cones journaled in said stepped sections respectively, the larger of said cones being located at the front, a multiple die holder located between each pair of cones, a stationary stepped die holder located on the left wall of said machine, said left wall having an angular edge slot inclined downwardly at the rear in alinement with said stationary die holder, whereby the wire to be drawn having a plurality of spaced dies thereupon may be passed into said cabinet from the front thereof and the dies assembled therein.

'7. In a wiredrawing machine, a cabinet having wire entrance and exit walls, wiredrawing stepped cones located within said cabinet, said walls having angular slots in the front edges thereof, whereby the wire to be drawn having dies strung at intervals thereupon may be passed into said. cabinet from the front for ease in assembling said dies in said mechanism, the slot in said entrance wall being angular and enlarged at the rear to permit the wire to be delivered selectively to any one of said cones.

8. In a wiredrawing machine, a cabinet having wire entrance and exit walls, stepped wiredrawing cones located within said cabinet, said walls having angular slots in the front edges thereof for selectively delivering the wire to any one of said cones, whereby the wire to be drawn having 5 dies strung at intervals thereupon may be passed into said cabinet from the front for ease in assembling said dies in said mechanism, and guiding means located on the outside of said entrance wall adjacent the slot in said wall for directing the wire to the wiredrawing mechanism.

9. In a wiredrawing machine, a cabinet having opposed wire-entrance and wire-exit walls, wiredrawing mechanism located within said cabinet, said walls having angular slots in the front edges thereof, whereby the wire to be drawn having dies prestrung at intervals therealong may be passed directly into said cabinet from the front and said dies assembled in the wiredrawing mechanism, a stationary multiple die box located on the entrance wall of said cabinet below the slot in said entrance wall, said box having a plurality of die cups for selectively holding the initial die, and means for selectively lubricating the die in any one of the several die cups of said die box in which it may be located.

10. In a wiredrawing machine, a die supporting box, a die supported therein, means for continuously drawing wire through said die, and a pivoted hook attached to said box for loosely embracing the wire being drawn as it passes through said die for preventing accidental displacement of said die from said box by the spring action of said wire when not under tension.

11. In a wiredrawing machine, a cabinet, a stationary die supporting box positioned on the wire-entrance wall of said cabinet, said box having a plurality of die cups for selectively receiving an initial die, the opposed walls of said die cups having alined slots to permit wire to be passed therethrough, and a plurality of hook members pivoted on the outside walls of said box, the heads of said hook members being normally positioned across said slots to prevent accidental displacement of said initial die from its die cup.

12. In a wiredrawing machine, a cabinet having wire entrance and exit walls, a cone comprising a plurality of stepped wiredrawing capstans mounted in said cabinet, said walls having slots in the front edges thereof for selectively delivering to any one of said capstans whereby the wire to be drawn having dies strung at intervals thereupon may be passed into said cabinet from the front, and a guide roll adjustable vertically and horizontally on the outside of said entrance wall for permitting the wire to be delivered into tangential alinement with any one of said capstans.

13. In a wiredrawing machine, a cabinet having wire entrance and exit walls, a cone comprising a plurality of stepped wiredrawing capstans of different diameters mounted in said cabinet, a guide roll adjustable vertically and horizontally on the outside of said entrance wall for permitting the wire to be delivered into the cabinet in tangential alignment with any one of said capstans, a horizontal shaft for slidably supporting said guide roll, a bracket for supporting one end of said shaft, and an elongated pad plate for selectively attaching said bracket in vertically adjusted position on the entrance wall of said cabinet.

14. In a wiredrawing machine, a cabinet having wire entrance and exit walls, a cone comprising a plurality of stepped wire drawing capstans o'f diiierent diameters mounted in said cabinet, a guide roll adjustable vertically and horizontallyon the outside of said entrance wall for permitting the wire to be delivered into the cabinet in tangential alinement with any one of said capstans, a horizontal shaft for slidably supporting said guide roll, a bracket for supporting one end of said shaft, and an elongated pad plate for selectively attaching said bracket in vertically adjusted position on the entrance wall of said cabinet, said shaft having an enlarged stop flange on its free end to limit the sliding movement of said roll.

15. In a wiredrawing machine, a cabinet, a stationary die supporting box positioned on the wire-entrance wall of said cabinet, said box hav- I ing a plurality of die holding cups for selectively receiving an initial die, the opposed walls of said diecups having alined vertical slots to permit wire to be passed therethrough, said entrance wall having an open slot coextensive with the various possible positions of said die.

16. In a wiredrawing machine, a cabinet, a stationary die supporting box positioned on the wireentrance wall of said cabinet, said box having a plurality of compartments open at the top for selectively receiving an initial die, said entrance wall having an open slot coextensive with the various possible positions of said die.

17. In a wiredrawing machine, a die supporting box, a die supported therein, hook-shaped means attached to the outside of said box for embracing the wire being drawn and preventing excessive lateral movement of said wire which would tend to accidentally displace the die.

18. In a wiredrawing machine, a cabinet having wire entrance and exit walls, wiredrawing mechanism in said cabinet, said entrance wall having an angular slot formed in the front edge thereof to permit the wire having a plurality of dies'prestrung thereupon at spaced intervals to be passed into the cabinet from the front thereof and the dies assembled in said mechanism.

19. In a wiredrawing machine, a cabinet having wire entrance and exit walls, wiredrawing mechanism in said cabinet, said entrance and exit walls having angular slots formed in the front edges thereof to permit a Wire having a plurality of dies prestrung thereupon to be passed into the cabinet from the front thereof and the dies assembled in said mechanism.

WILLIAM D. PIERSON. GEORGE W. JACKMAN. 

